三方登录之微博登录
微博作为现在传播讯息的快捷途径之一，网站很有必要接入一下它的快捷登录！
既然如此，那就记录一个微博登录的代码吧！
逻辑是：1.根据微博开放平台接口得到微博帐号的openid。2.比对数据库判断用户。3.进行用户登录或者用户绑定。
控制器：**auth**
```
function weibologin(){
$wblogin = new WeiboLogin();
$code = I('get.code','');
if(empty($code)){
$wblogin->getCode();
}
//var_dump(I('get.'));
$token = $wblogin->getToken($code);
//var_dump($token);
if(!$token){
$this->err('微博资料获取失败');
}
if(!$token['access_token'] || !$token['uid']){
$this->err('微博资料获取失败');
}
$user = new userModel();
$res = $user->WeiboAutoLogin($token['access_token']);
if($res === false){
$this->err($user->getError());
}else if($res === true){
redirect(TRUE_DIR);
}else{
$wbinfo = $wblogin->getWBInfo($token);
//var_dump($wbinfo);
if(isset($wbinfo['error'])){
$this->err($wbinfo['error']);
}
session('authinfo',$wbinfo);
session('authtype','weibo');
session('authopenid',$token['access_token']);
$this->redirect('index/bind');
}
}
```
模型：**user**
```
//微博自动登录
function WeiboAutoLogin($openid){
$user = $this->table('auth_user')->where(array('openid'=>$openid))->find();
if($user){
$res = $this->table('user')->where(array('id'=>$user['create_by']))->find();
if(!$res){
$this->error = '用户异常，无法登录';
return false;
}
if($res['status']==0){
$this->error = '帐号无法登录，请联系管理员';
return false;
}
self::login($res);
return true;
}else{
return U('index/bind');
}
}
```
功能类:**Weibologin**
```
/**
* construct WeiboOAuth object
*/
function __construct($access_token = NULL, $refresh_token = NULL) {
if(!C('WEIBO_LOGIN')){
dir('请配置微博登陆参数');
}
$this->conf = C('WEIBO_LOGIN');
$this->client_id = $this->conf['WB_AKEY'];
$this->client_secret = $this->conf['WB_SKEY'];
$this->access_token = $access_token;
$this->refresh_token = $refresh_token;
}
/**
* authorize接口
*
* 对应API：{@link http://open.weibo.com/wiki/Oauth2/authorize Oauth2/authorize}
*
* @param string $url 授权后的回调地址,站外应用需与回调地址一致,站内应用需要填写canvas page的地址
* @param string $response_type 支持的值包括 code 和token 默认值为code
* @param string $state 用于保持请求和回调的状态。在回调时,会在Query Parameter中回传该参数
* @param string $display 授权页面类型 可选范围:
* - default 默认授权页面
* - mobile 支持html5的手机
* - popup 弹窗授权页
* - wap1.2 wap1.2页面
* - wap2.0 wap2.0页面
* - js js-sdk 专用 授权页面是弹窗，返回结果为js-sdk回掉函数
* - apponweibo 站内应用专用,站内应用不传display参数,并且response_type为token时,默认使用改display.授权后不会返回access_token，只是输出js刷新站内应用父框架
* @return array
*/
function getAuthorizeURL($response_type = 'code', $state = NULL, $display = NULL ) {
$params = array();
$params['client_id'] = $this->client_id;
$params['redirect_uri'] = $this->conf['WB_CALLBACK_URL'];
$params['response_type'] = $response_type;
$params['state'] = $state;
$params['display'] = $display;
return $this->authorizeURL() . "?" . http_build_query($params);
}
//获取code
function getCode(){
//state参数用于防止CSRF攻击，成功授权后回调时会原样带回
// $state = md5(uniqid(rand(), TRUE));
// session('state',$state);
//拼接URL
// $dialog_url = "https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id="
// . $this->app_id . "&redirect_uri=" . $this->my_url. "&state="
// .$state;
$dialog_url = $this->getAuthorizeURL();
exit("<script> top.location.href='" . $dialog_url . "'</script>");
}
//获取Token
function getToken($code){
$token=null;
$keys = array();
$keys['code'] = $code;
$keys['redirect_uri'] = $this->conf['WB_CALLBACK_URL'];
try {
$token = $this->getAccessToken( 'code', $keys ) ;
} catch (OAuthException $e) {
}
return $token;
}
//获取用户资料
function getWBInfo($token){
$params['access_token']=$token['access_token'];
$params['uid']=$token['uid'];
return $this->get('https://api.weibo.com/2/users/show.json',$params);
}
/**
* access_token接口
*
* 对应API：{@link http://open.weibo.com/wiki/OAuth2/access_token OAuth2/access_token}
*
* @param string $type 请求的类型,可以为:code, password, token
* @param array $keys 其他参数：
* - 当$type为code时： array('code'=>..., 'redirect_uri'=>...)
* - 当$type为password时： array('username'=>..., 'password'=>...)
* - 当$type为token时： array('refresh_token'=>...)
* @return array
*/
function getAccessToken( $type = 'code', $keys ) {
$params = array();
$params['client_id'] = $this->client_id;
$params['client_secret'] = $this->client_secret;
if ( $type === 'token' ) {
$params['grant_type'] = 'refresh_token';
$params['refresh_token'] = $keys['refresh_token'];
} elseif ( $type === 'code' ) {
$params['grant_type'] = 'authorization_code';
$params['code'] = $keys['code'];
$params['redirect_uri'] = $keys['redirect_uri'];
} elseif ( $type === 'password' ) {
$params['grant_type'] = 'password';
$params['username'] = $keys['username'];
$params['password'] = $keys['password'];
} else {
throw new OAuthException("wrong auth type");
}
$response = $this->oAuthRequest($this->accessTokenURL(), 'POST', $params);
$token = json_decode($response, true);
if ( is_array($token) && !isset($token['error']) ) {
$this->access_token = $token['access_token'];
//$this->refresh_token = $token['refresh_token'];
} else {
throw new OAuthException("get access token failed." . $token['error']);
}
return $token;
}
```
\*weibologin 基于微博登录官方DEMO
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